3 Answers
3

What you like to do ... there is a working SSH / SSL already on your Mac. If you like to build stunnel you need Xcode with the CLI tools ... and some time. I haven´t tried it but a quick look in the build instructions looks as if there are no big problems.

As promised, here are the steps to build stunnel from source. I used a Lion machine but it is the same on a Mountain Lion machine. There is no need for Fink, MacPorts or Homebrew ... brings more troubles then it helps.

Go to https://www.stunnel.org/downloads.html and download stunnel-4.54.tar.gz and stunnel-4.54.tar.gz.sha256. Open a terminal Utilities => Terminal>. Terminal is case sensitive, before you do something think twice before you press return - there is no undo or redo in terminal. Each line is one line in terminal and needs to press return at the end of the line.

The configure script uses autoconf, so put your fingers away from other options because if all is there and supported it will build a fine 64 bit app for you. make check is optionally. sudo make install requires your admin password. During this step you had to input some basic informations (self explaining). The && is used to run one command after each other ONLY if the last was successful.

After all is done your stunned app was installed in /usr/local/bin. To run it, open terminal and type stunnel or stunnel3 (see the docs for the difference) and press return.

To install many UNIX, GNU, and other open source tools including stunnel I recommend to use the MacPorts package management system in addition of the XCode command line tools. MacPorts will keep these softwares easy to manage. Additionally, some of the softwares have special MacPorts' build which work nicer with OS X system.